21103342670 has 8 divisors (see below), whose sum is σ = 37986016824. Its totient is φ = 8441337064.

The previous prime is 21103342633. The next prime is 21103342679. The reversal of 21103342670 is 7624330112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103342679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055167124 + ... + 1055167143.

It is an arithmetic number, because the mean of its divisors is an integer number (4748252103).

Almost surely, 2^21103342670 is an apocalyptic number.

21103342670 is a deficient number, since it is larger than the sum of its proper divisors (16882674154).

21103342670 is a wasteful number, since it uses less digits than its factorization.

21103342670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110334274.

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 21103342670 its reverse (7624330112), we get a palindrome (28727672782).

The spelling of 21103342670 in words is "twenty-one billion, one hundred three million, three hundred forty-two thousand, six hundred seventy".